Linear tensioner

Inactive Publication Date: 2017-02-16
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]The object of the invention is to create a linear tensioner of the type specified above, in which, due to the use of a transport securing device, the

Problems solved by technology

For belt or chain drives in reciprocating-piston internal combustion engines, as already described, only a very limited installation space is available for housing the linear tensioner.
There is also the problem that the spring link remains permanently on the linear tensioner during the subsequent operation of the reciprocating-piston i

Method used

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Embodiment Construction

[0028]In FIG. 1, 1 designates a linear tensioner that has a first adjustment element 2 and a second adjustment element 3. The first adjustment element 2 has a fixing eyelet 4 by which the linear tensioner 1 can be mounted so that it is fixed in place and can pivot on a crankcase of a reciprocating-piston internal combustion engine. A base 5 of the first adjustment element 2 on which a valve housing 6 of a non-return valve 7 is fixed connects to the fixing eyelet 4.

[0029]A hydraulic cylinder 8 extends out from this valve housing 6 in the longitudinal direction of the linear tensioner 1, wherein this cylinder is connected to the valve housing 6 in a sealed manner. Extending from the base 5 is a hollow-cylindrical section 9 of the first adjustment element 2 that is constructed in multiple different steps and with inclined wall sections. This hollow-cylindrical section 9 surrounds the hydraulic cylinder 8 with a radial distance, which forms an oil reservoir 10.

[0030]The second adjustmen...

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Abstract

A linear tensioner is provided for tensioning a traction mechanism provided in a drive system with a first adjustment element that has a hollow-cylindrical construction and a second adjustment element that is guided so that it can be moved longitudinally on this first element, wherein contact surfaces are formed on facing end surfaces of the adjustment elements, on which a compression spring actuating at least one of the adjustment elements in the tensioning direction is supported. A transport securing device is provided that prevents, in a specified locked position, a movement of the adjustment elements relative to each other by at least one locking element. For creating a linear tensioner, in which, due to the use of a transport securing device, the structural dimensions of the linear tensioner are not increased, the adjustment element is movable out of the locked position against the force of the compression spring into an unlocked position, in which the at least one locking element is automatically displaced into a receptacle of the one adjustment element, whereby the adjustment elements are permanently unlocked relative to each other.

Description

INCORPORATION BY REFERENCE[0001]The following documents are incorporated herein by reference as if fully set forth: German Patent Application No. 102015215420.3, filed Aug. 13, 2015.FIELD OF THE INVENTION[0002]The invention relates to a linear tensioner for tensioning a traction mechanism provided in a chive system with a first adjustment element that has a hollow-cylindrical construction at least in some sections, on which a second adjustment element is guided so that it can be moved, wherein contact surfaces are constructed on facing end surfaces of the adjustment elements, on which a compression spring actuating at least one of the adjustment elements in the tensioning direction is supported, and wherein a transport securing device is provided that prevents a movement of the adjustment elements relative to each other in the tensioning direction by a lock in a predetermined position.PRIOR ART[0003]Such linear tensioners are used, in particular, in reciprocating-piston internal com...

Claims

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Application Information

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IPC IPC(8): F16H7/08
CPCF16H7/0829F16H7/08F16H7/0848F16H2007/0812F16H2007/0859F16H2007/0806F16H2007/0878
Inventor YOKOYAMA, SATORU
Owner SCHAEFFLER TECH AG & CO KG
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